<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>未二维码添加标题</title>
</head>
<body>

    <img src="http://127.0.0.1:8080/qrcode"/>

    <a href="http://127.0.0.1:8080/qrcode">下载二维码</a>

</body>
</html>
